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The Stars Behind Our Stellar Classification System

Author Dava Sobel explains how a group of women astronomers helped develop the classification system that scientists use to identify stars today.

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Cool As Ice

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Bones, Books, and Bell Jars

In her new book, Bones Books and Bell Jars, physician and photographer Andrea Baldeck documents the collection of medical texts, instruments, and specimens at Philadelphia’s Mütter Museum.

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